Document Type and Number:
Japanese Patent JPS4860421
Kind Code:
A
Application Number:
JP9640371A
Publication Date:
August 24, 1973
Filing Date:
November 30, 1971
Export Citation:
International Classes:
F16L9/08; C21D1/00; E04G9/10; E04G21/08; F27D3/02; (IPC1-7): E04G9/10